93240209 has 2 divisors, whose sum is σ = 93240210. Its totient is φ = 93240208.

The previous prime is 93240193. The next prime is 93240263. The reversal of 93240209 is 90204239.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88078225 + 5161984 = 9385^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 93240209 - 2⁴ = 93240193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (93240289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46620104 + 46620105.

It is an arithmetic number, because the mean of its divisors is an integer number (46620105).

Almost surely, 2^93240209 is an apocalyptic number.

It is an amenable number.

93240209 is a deficient number, since it is larger than the sum of its proper divisors (1).

93240209 is an equidigital number, since it uses as much as digits as its factorization.

93240209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 93240209 is about 9656.0969858427. The cubic root of 93240209 is about 453.4552273981.

The spelling of 93240209 in words is "ninety-three million, two hundred forty thousand, two hundred nine".